Continuous hiss on Fedora Core 3

On one of my machines, I run an out-of-the-box Fedora Core 3. One of the issues I had was a continuous hiss (white noise) on the speakers. Found on the net, here the solution:- go to Applications => Sound & Video => Volume Control- File => Change Device. If you have several devices, you should check on all. For my part, the noisy source came from "Ensoniq AudioPCI".- Edit => Preference. It opens "Volume Control Preferences".- Check-on "Capture"; the new source appears on the "Capture" tab.- You get the fellow; mute it and the noise instantaneously ceases.